Your best mate just fell of a cliff in mysterious consequences and you were the last person to see him alive. What do you do? Well, if you're David Lindsay from Arbroath, you get the hell out of there and don't return. Not until Nicola Cruickshank gets in touch and demands that you go back for a school reunion. The place you've been running from 15 years. Of course you go. And when someone else takes a dive off the cliffs - an act the locals have taken to calling "tombstoning" - while David's there, he has a choice: run away again, or finally find out why people keep dying around him...